JPH07255976A - Movable table device - Google Patents

Abstract

PURPOSE:To minimize the number of parts, in a movable table device, such as X-Y table, by lowering the height of the table, wherein the weight of the device can be reduced and assembling thereof can be improved. CONSTITUTION:There are provided a movable table 1 with its four sides comprising two pairs of parallel sides, wherein both the pairs of sides are oriented normal to each other, a pair of first guide rails 2, 2, wherein each of the guide rails corresponds to each side of one of the pairs of parallel sides, and a pair of second guide rails 3, 3, wherein each of the guide rails corresponds to each of the sides of the other pair of parallel sides. And the first guide rails 2, 2 are disposed on a fixed side and the second guide rails 3, 3 are disposed on a movable side so as to be movable in their length directions. A cloth presser support arm 7 with a cloth presser 8 is fixed onto the guide rails 3, 3 on the movable side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable table device such as an XY table used in a sewing machine for sewing various patterns.

[0002]

2. Description of the Related Art In a sewing machine that performs various pattern stitches, an X-Y crossing a presser foot is orthogonal to form various pattern stitches.
An XY table device that moves in the direction is used. As such an XY table device, for example, Japanese Patent Publication No.
No. 2-47555, Japanese Examined Patent Publication No. 63-9477,
There is one disclosed in Japanese Patent Publication No. 63-13715.

That is, the one disclosed in Japanese Patent Publication No. 62-47555 has an X-direction slide table and a Y-direction slide table which are vertically stacked, and has a problem that the drive mechanism is large and takes up a large space. Further, the one disclosed in Japanese Examined Patent Publication No. 63-9477 is a large-scale driving mechanism for moving the XY table along the X guide axis and the Y guide axis, and its structure is considerably complicated and large. There is a problem that it takes a lot of space both in height and height. Further, the one disclosed in Japanese Patent Publication No. 63-13715 moves a cloth holding frame by using an X-axis moving base and a Y-axis moving base, an X-axis moving rail and a Y-axis moving rail, an XY moving frame, and the like. This is also a large-scaled drive mechanism, and has a problem that the structure is considerably complicated and a large space is required in terms of size and height.

FIG. 4 shows an example of a conventional XY table device, 41 is an X-direction slide table, 4
2 is an orthogonal base, 43 is a Y-direction slide table, 44 is a presser foot support arm, and 45 is a presser foot. That is, this X
-The Y table device includes a Y direction slide table 43 on the X direction slide table 41 via an orthogonal base 42.
Slidably assembled, this Y-direction slide table 4
A cloth presser support arm 44 having a cloth presser 45 is fixed to the upper part of FIG. Incidentally, contrary to the illustrated example, there is also one in which an X-direction slide table is stacked on a Y-direction slide table.

As described above, in the conventional XY table device, the two tables 41 and 43, each of which is linearly moved, are combined so as to be overlapped in the orthogonal direction so that they can be moved in the XY directions as one table. .

[0006]

However, the conventional XY table device as shown in the drawing has the following problems because it uses two linearly moving tables and combines them in the orthogonal direction.

The height of the table increases in response to the load.

An orthogonal base is required to maintain the two tables that move linearly so that they are orthogonal to each other, which is an obstacle to weight reduction.

As shown in FIG. 5, the number of parts for combination is large, and it takes a lot of time to assemble.

Further, in order to eliminate the above-mentioned drawback, FIG.
There are also countermeasures as shown in, 31 is a movable table, 3
2, 33, 34, and 35 are guide rails, 36 is a cloth pressing support arm provided with a cloth pressing member (not shown), 38 is an X-direction control rod, and 39 is a pivot screw. That is, in this XY table device, a pair of X-direction guide rails 32 and 32 and a pair of Y-direction guide rails 33 and 33 are fixed to the four sides of the movable table 31 by screwing. X direction guide rails 34, 34, which are slidably assembled to the rollers 32, 32 by sandwiching rollers (not shown) respectively, are fixed to the machine frame (not shown) by screws. Further, the Y-direction guide rails 35, 35, which are slidably combined with the Y-direction guide rails 33, 33 sandwiching rollers (not shown) respectively, are screwed to the lower surface of the cloth presser support arm 36 having a cloth presser (not shown). It is fixed by.

A tip portion 38a of an X-direction control rod 38 that is controlled and moved in the X-direction is rotatably attached to a part (a central portion in the figure) 31a of the movable table 31 by a pivot shaft 39. In addition, a Y (not shown) that moves in a controlled manner in the Y direction into the mounting hole 36a of the presser foot support arm 36.
The direction moving shaft is attached via a guide rod (not shown).

As described above, the X-direction guide rails 32 and 32 and the X-direction guide rail 3 which are orthogonal to each other in the plane are provided.
4, 34 and the Y-direction guide rails 33, 33 and the Y-direction guide rails 35, 35 are combined to form an XY table device in which the height of the movable table 31 is reduced, thereby eliminating the above-mentioned drawbacks. To be done.

However, even with the XY table device as a countermeasure product which is orthogonal to such a plane, the XY table 3
Since the X-direction guide rails 32, 32 and the Y-direction guide rails 33, 33 are screwed on the four side portions of No. 1, the above problems still remain.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a movable table device in which the height of the table is lowered, the weight of the table is reduced with a minimum number of parts, and the assembling property is improved. It is in.

[0015]

In order to solve the above problems, the present invention provides a movable table device that is movable in directions that are substantially orthogonal to each other. Two side portions forming a pair substantially parallel to each other are substantially orthogonal to each other. A movable table having a side portion, a first guide rail forming a pair corresponding to one pair of two side portions of the movable table, and a pair of two side portions forming the other pair of the movable table. Second pair
Of the first guide rail and the second guide rail, for example, the first guide rail as a fixed side,
It is characterized in that the other pair of guide rails, for example, the second guide rail is made movable on the movable side in the direction along the length direction thereof.

It should be noted that, for example, a first drive member such as an X-direction control rod for controlling the movement of the movable guide rail in a direction substantially orthogonal to the lengthwise direction is connected to the movable table, and the movable table is movable. A presser foot support arm provided with a presser foot is fixed on the side guide rail, and the movement of the movable guide rail in the direction along the length direction is controlled on the side of the presser foot support arm. The second drive member such as the directional movement shaft is connected.

[0017]

According to the present invention, the pair of first guide rails corresponding to one pair of two side portions of the movable table and the pair of corresponding two side portions of the movable table are formed. Of the second guide rails formed, one pair of guide rails serves as the fixed side, and the other pair of guide rails serves as the movable side that is movable in the direction along the length thereof. Since only the first guide rail and the second guide rail that are orthogonal to the circumference of the table in a plane are provided, the height of the table is low and the number of parts is minimized. Therefore, the weight can be reduced and the assembling property can be improved.

The first driving member for controlling the movement in the X direction and the like is connected to the movable table, and the movement in the Y direction and the like is controlled on the side of the cloth pressing support arm fixed on the movable guide rail. By connecting the second driving member to the sewing machine, for example, the XY crossing the presser foot of the sewing machine for various pattern sewing is orthogonal.
Can be moved in the direction.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a movable table device according to the present invention will be described below with reference to FIGS.

First, FIG. 1 shows a movable table device as an example to which the present invention is applied, and an essential part thereof is enlarged and shown in FIG. 2, where 1 is a movable table and 2 is a first guide rail. 3 is a second guide rail, 4 is a roller jump-out prevention screw, 5 is a first drive member (X direction control rod), 6 is a pivot shaft, 7 is a cloth pressing support arm, 8 is a cloth pressing, and 9 is a cloth pressing. The coupling screw, 10 is a guide rod, and 11 is a second drive member (Y-direction moving shaft).

As shown in the drawing, the movable table 1 is of a square quadrangular plane having two side portions forming a pair in parallel and having four side portions orthogonal to each other. A screw hole portion 1a is formed in the central portion of the movable table 1. Four
Guide grooves 1b, 1b, 1c, 1c are formed along the side surfaces of the side portions. Then, in the illustrated example, first guide rails 2 and 2 which face and are parallel to the guide grooves 1b and 1b on the shorter sides of the pair of movable tables 1, respectively,
Long side guide grooves 1c, 1c forming a pair of the movable table 1
The second guide rails 3 and 3 facing and parallel to
Is provided.

The first guide rails 2 and 2 are fixed to a sewing machine frame (not shown) by screws, and the guide grooves and the guide grooves 1b and 1 provided in the movable table 1 are fixed.
A plurality of rotatable rollers (not shown) are respectively interposed between the rollers and b. Therefore, the movable table 1 is movable in the direction of the arrow X shown along the first guide rails 2 and 2 on the fixed side.

The second guide rails 3, 3 are movable sides fixed to the cloth pressing support arm 7 as will be described later, and their guide grooves and the guide grooves 1c, 1 of the movable table 1.
A plurality of rotatable rollers (not shown) are also provided between each of them and c. Therefore, the second guide rails 3, 3 on the movable side and the movable table 1 are movable in the direction of the arrow Y shown in the figure along the length direction thereof.
Roller protrusion prevention screws 4, 4, 4, 4 are fastened to both ends of the long side of the movable table 1, respectively.

The movable table 1 is provided with an X-direction control rod 5 which is a first drive member which is controlled and moves in the X-direction.
Are connected. That is, the tip portion 5a of the X-direction control rod 5 is tightened from below with respect to the screw hole portion 1a in the central portion of the movable table 1, so that the screw portion 6a at the tip portion of the pivot shaft 6 is tightened. Is rotatably connected around. As the actuator that is the drive source of the X-direction control rod 5, one that transmits driving force from the main motor of the sewing machine through a cam mechanism or one that controls the drive by a pulse motor (step motor) is used. What is done is adopted.

Further, a cloth pressing support arm 7 is fixed on the movable second guide rails 3, 3. That is, the second guide rails 3, 3 are fixed to the lower surface of the base plate portion 7a of the cloth pressing support arm 7 by tightening the coupling screws 9, 9, 9, 9. This presser foot support arm 7
Is provided with a cloth presser 8 having a rectangular frame attached to the tip thereof.

The cloth presser support arm 7 is provided with a Y
A Y-direction moving shaft 11, which is a second driving member that is controlled to move in the direction, is connected. That is, a mounting hole 7b penetrating in the lateral direction (X direction) is formed above the base plate portion 7a of the cloth pressing support arm 7, and the guide rod 10 is slidably held in the mounting hole 7b. . The tip portion 11a of the Y-direction moving shaft 11 is slidably attached to the guide rod 10. The Y-direction moving shaft 11
Similarly to the actuator for the X-direction control rod 5, an actuator that is a drive source for transmitting the driving force from the main motor of the sewing machine via a cam mechanism or a pulse motor (step motor). A drive control type is adopted.

XY of the sewing machine constructed as described above
According to the table device, the screw hole portion 1a of the movable table 1 is provided.
By the movement in the X direction of the X-direction control rod 5 connected to the first guide rail 2, which is the fixed side, through the pivot shaft 6.
2, the movable table 1 moves in the X direction, and the guide rod 1 is inserted into the attachment hole 7b of the cloth pressing support arm 7.
By moving the Y-direction moving shaft 11 connected via 0 in the Y-direction, the cloth pressing support arm 7 fixed on the movable second guide rails 3 is moved along the movable table 1 in the Y-direction.
Move in the direction. Therefore, the cloth presser 8 provided at the tip of the cloth presser support arm 7 moves to a predetermined position along the XY direction, and various patterns can be formed on the cloth by driving a needle (not shown).

From the point of view of construction, first, only one movable table 1 is required, and since two orthogonal tables are not overlapped as in the conventional case, the table height can be lowered.
Moreover, since the movable table 1 also serves as a guide rail and the conventional orthogonal base is not required, the weight is reduced. Furthermore, in comparison with the countermeasure product (see Fig. 3),
An integral guide groove 1b along the four sides of the movable table 1,
Since 1b, 1c and 1c are formed, the number of parts is minimized, the weight can be further reduced, and the assembling property is also excellent. Moreover, the number of parts such as screws for attaching the guide rails has been reduced, and in the past, the movable table 1 was mounted with great care in parallel to the guide rails.
Since the guide groove has already been completed around the circumference of, the assembly becomes easy.

In the above embodiments, the XY table device of the sewing machine is used. However, the present invention is not limited to this, and for example, NC (Numerical) is used.
Control: Numerical control) A worktable of a machine tool and a movable table device as an automatic feeding device such as a tool rest may be used. Further, the relationship between the fixed side and the movable side of the guide rail is also arbitrary, and it is needless to say that the detailed structure of the drive member and the actuator thereof can be appropriately changed.

[0030]

As described above, according to the movable table device of the present invention, it is only necessary to provide the first guide rail and the second guide rail which are orthogonal to each other around the movable table in a plane. The height of the table can be reduced and the number of parts can be minimized. Therefore,
It is possible to reduce the weight and improve the assembling property.

As described in claim 2, the first drive member for controlling the movement in the X direction or the like is connected to the movable table, and is attached to the movable work guide rail on the side of the presser foot support arm. By connecting the second drive member that controls the movement in the Y direction and the like, for example, in a sewing machine for sewing various patterns, the X-axis of the presser foot orthogonal to each other is formed in order to form the various pattern stitches. It can be moved in the -Y direction.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a movable table device as an example to which the present invention is applied.

FIG. 2 is an exploded perspective view of a part of the movable table device of FIG. 1, showing an enlarged main part thereof.

FIG. 3 is a partially exploded perspective view showing a configuration example of an XY table device as a countermeasure product.

FIG. 4 is a schematic perspective view showing an example of a conventional XY table device.

5 is an exploded perspective view showing components of the XY table device of FIG. 4. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Movable table 2 1st guide rail 3 2nd guide rail 4 Roller protrusion prevention screw 5 1st drive member 6 Pivot shaft 7 Cloth presser support arm 8 Cloth presser 9 Coupling screw 10 Guide rod 11 Second drive member

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical indication location D05B 29/00 7380-3B (72) Inventor Tadayoshi Minagawa 8-2 Kokuryo-cho, Chofu-shi, Tokyo 1 Within Juke Corporation

Claims (2)

[Claims] 1. A movable table device capable of moving in directions substantially orthogonal to each other, a movable table having four side portions in which two side portions forming a pair substantially in parallel are substantially orthogonal to each other, and one pair of the movable table. A pair of first guide rails respectively corresponding to the two side portions of the movable table and a second guide rail pair of the movable table corresponding to the other pair of two side portions, Of the first guide rail and the second guide rail, one pair of guide rails is a fixed side, and the other pair of guide rails is a movable side that is movable in a direction along its length. A movable table device characterized in that 2. A first drive member for controlling movement of the movable-side guide rail in a direction substantially orthogonal to a length direction of the movable-side guide rail is coupled to the movable-side guide rail, and a cloth is provided on the movable-side guide rail. A cloth presser support arm provided with a presser is fixed, and a second drive member for controlling the movement of the movable guide rail in the length direction is connected to the cloth presser support arm side. The movable table device according to claim 1, wherein: